import java.io.*;
import java.util.*;

public class SlimeRace {
    private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    private static StringTokenizer st;

    private static int readInt() throws IOException {
        while (st == null || !st.hasMoreTokens()) st = new StringTokenizer(br.readLine());
        return Integer.parseInt(st.nextToken());
    }

    public static void main(String[] args) throws IOException {
        int N = readInt();
        int D = readInt();
        for (int i = 0; i < N; i++) {
            readInt();
        }
        long speedSum = 0;
        for (int i = 0; i < N; i++) {
            speedSum += readInt();
        }
        System.out.println((D + N - 1) / speedSum);
    }
}